Boost your email opens with a punchy subject line. Don’t forget to add a fun, relevant call-to-action button to your email. One Mississippi, two Mississippi… 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Don’t make ‘em yawn! Keep your emails exciting and brief. Test, test, and test again! Make sure your email looks good on all devices before you send it out. Not just a pretty interface Try different email subject line styles to find what gets the most opens.